200 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
anfr. vi., haud tumidis, suturis parum impressis; lirulis crebris rotundatis 
undique cincta, quarum v. in spira monstrantur; interstitiis parvis; basi 
rotundata, haud angulata; umbilico parvo, haud carinato; apertura subor- 
biculari, parum declivi; columella vix arcuata. Long., .24; long, spin, .11 ; 
lat., .2; div., 70°. (Carpenter.) 
Shell small, elevated, compact, tawny; with excavate margins spiral, 
with six whorls, not thick, with sutures little impressed; girdled with 
frequent rounded lirulae, of which five show on the spire; with small 
interstices; with rounded base, not angulate; with small umbilicus, not 
crenate; with suborbicular aperture; little sloping; columella scarcely 
arcuate. (Translation.) 
Type in United States National Museum. Type locality, Neah Bay, 
Washington. 
Range. Known only from type locality. 
Described as Gibbula Carpenter. 
Subgenus Pupillaria Dali, 1909 
Margarites pupilla Gould, 1849 
Plate 101, figs. 2, 3 
Proceedings of the Boston Society of Natural History, 3:91. Mollusca and Shells of 
the United States Exploring Expedition, 12:186, fig. 208. 
Testa parva, elevato-conica, margaritacea extrinsecus incana, filis vi- 
rido-fuscis ubique cincta, ad intervallos minutissime clathrata: spira anfr. 
6 convexis: basis planiuscula, fissura umbilicali perforata: apertura circu- 
laris columella arcuata: faux fulgida, minutissime punctata. Lat., A ,* alt., 
%o P°ll- (Gould.) 
Shell small, ovate-conic, rather solid, perforate, ash-colored, with 
darker greenish on the ribs, sub-surface brilliant silvery; surface with 
small, flattened, nearly equal and equidistant ribs, about five on the upper 
whorls separated by interspaces of the same width, and with fine, crowded, 
lamellar lines of growth, by which the interspaces are distinctly barred : 
spire of six convex whorls, the last obtusely angular, flattened at base, and 
with much finer and more crowded ribs and grooves. Aperture circular; 
columella somewhat arcuate, with a minute, groove-like umbilicus at its 
side; lip sharp; interior pale and opaque near the lip; minutely punctured, 
and with crimson iridescence within. (Gould.) 
Type in United States National Museum. Type locality, New Zealand. 
Gould in his description of this species gives New Zealand as the type 
locality. It must have been a ballast shell. 
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